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Open AccessArticle

Uranium (VI) Recovery from Black Shale Leaching Solutions Using Ion Exchange: Kinetics and Equilibrium Studies

1
Department of Metallurgical Sciences, Satbayev University, 22a Satbaev str., Almaty 050013, Kazakhstan
2
Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
3
Department of Metallurgical and Materials Engineering, Fırat University, Elazığ 23119, Turkey
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(8), 689; https://doi.org/10.3390/min10080689
Received: 12 July 2020 / Revised: 30 July 2020 / Accepted: 30 July 2020 / Published: 31 July 2020
(This article belongs to the Special Issue Cleaner Production in Mineral Processing)
This work studies the removal of uranium ions from chemically leached solutions by sorption using two weak and two strong base anionites. Batch sorption experiments were performed to evaluate the optimum conditions at pH 1.2–2.2, 1.0 g resin dose for 1–12 h contact time at room temperature. These experiments addressed sorption kinetics and sorption isotherm. The maximum sorption capacity reached 55.8 mg/g at room temperature. The kinetics data are well described by the pseudo-second-order kinetic model at initial uranium concentration of 0.62 mg·L−1. To describe sorption kinetics pseudo-first-order, pseudo-second-order and intraparticle diffusion models were proposed. Studies indicated that the sorption of uranium can be fitted by a pseudo-second-order kinetic model very well. Equilibria were described by Langmuir, Freundlich, and Dubinin–Radushkevich equations. The experimental sorption isotherm is successfully described by the Langmuir model. View Full-Text
Keywords: black shale ore; uranium; sorption; kinetics; equilibria black shale ore; uranium; sorption; kinetics; equilibria
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MDPI and ACS Style

Baigenzhenov, O.; Khabiyev, A.; Mishra, B.; Turan, M.D.; Akbarov, M.; Chepushtanova, T. Uranium (VI) Recovery from Black Shale Leaching Solutions Using Ion Exchange: Kinetics and Equilibrium Studies. Minerals 2020, 10, 689. https://doi.org/10.3390/min10080689

AMA Style

Baigenzhenov O, Khabiyev A, Mishra B, Turan MD, Akbarov M, Chepushtanova T. Uranium (VI) Recovery from Black Shale Leaching Solutions Using Ion Exchange: Kinetics and Equilibrium Studies. Minerals. 2020; 10(8):689. https://doi.org/10.3390/min10080689

Chicago/Turabian Style

Baigenzhenov, Omirserik; Khabiyev, Alibek; Mishra, Brajendra; Turan, M. D.; Akbarov, Merey; Chepushtanova, Tatyana. 2020. "Uranium (VI) Recovery from Black Shale Leaching Solutions Using Ion Exchange: Kinetics and Equilibrium Studies" Minerals 10, no. 8: 689. https://doi.org/10.3390/min10080689

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